postgres

class ExportWriter
  def initialize(export)
    @export = export
  end

  def append(rows)

@Entity
@Table(name = "idempotency_records",
       uniqueConstraints = @UniqueConstraint(columnNames = "idempotency_key"))
public class IdempotencyRecord {

    public enum Status { IN_PROGRESS, COMPLETED }

class Article < ApplicationRecord
  has_many :taggings, dependent: :destroy
  has_many :tags, through: :taggings

  scope :published, -> { where.not(published_at: nil) }

module QueryBudget
  class Counter
    IGNORED = %w[SCHEMA CACHE TRANSACTION].freeze

    attr_reader :count

class AddSearchVectorToArticles < ActiveRecord::Migration[7.1]
  def up
    execute <<~SQL
      ALTER TABLE articles
      ADD COLUMN search_vector tsvector
      GENERATED ALWAYS AS (

CREATE TABLE events (
    id          bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
    source      text        NOT NULL,
    external_id text        NOT NULL,
    payload     jsonb       NOT NULL,
    occurred_at timestamptz NOT NULL,

class Task < ApplicationRecord
  POSITION_GAP = 1024

  belongs_to :board

  scope :ordered, -> { order(:position) }

import jakarta.persistence.Column;
import jakarta.persistence.MappedSuperclass;
import java.time.Instant;

@MappedSuperclass
public abstract class SoftDeletable {

@Configuration
public class TxConfig {

    @Bean
    public PlatformTransactionManager transactionManager(DataSource dataSource) {
        DataSourceTransactionManager tm = new DataSourceTransactionManager(dataSource);

class Reminder < ApplicationRecord
  belongs_to :user

  validates :time_zone, inclusion: { in: ActiveSupport::TimeZone::MAPPING.values }
  validates :local_time, presence: true

package store

import (
  "context"

  "github.com/jackc/pgx/v5"

package feed

import "time"

type Post struct {
	ID        int64